Now Reading: Antikythera Mechanism used bronze gears to mimic Moon’s changing speed
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Antikythera Mechanism used bronze gears to mimic Moon’s changing speed
Antikythera Mechanism used bronze gears to mimic Moon’s changing speed
Researchers have confirmed that the Antikythera Mechanism, a bronze device built in the second century BC, used a pin-and-slot gear system to replicate the Moon's variable speed along its elliptical orbit. The…
The Story in Brief
Researchers have confirmed that the Antikythera Mechanism, a bronze device built in the second century BC, used a pin-and-slot gear system to replicate the Moon's variable speed along its elliptical orbit. The Moon travels faster at perigee and slower at apogee, a pattern Hipparchos had described theoretically. A study in Nature details how high-resolution X-ray tomography revealed two offset gears connected by a sliding pin that accelerated and decelerated the output in a repeating cycle, effectively producing a mechanical sine wave.
The device also combined Babylonian arithmetic cycles with Greek geometric theory to predict lunar and solar eclipses, as deciphered from newly read inscriptions. The finding upends assumptions about ancient technical capability, showing that craftsmen translated abstract astronomy into physical machinery without algebra or trigonometry. The mechanism is now widely considered the world's oldest known analogue computer.
The Indian Opinion
The hype around the Antikythera Mechanism as a 'wonder of the ancient world' often drowns out the real story, that Greek and Babylonian astronomers were solving concrete problems without calculus or computers. The lazy narrative that the Greeks were only theoretical thinkers crumbles when you see a pin-in-slot gear train physically producing a sine-like speed variation centuries before trigonometry. The real test is whether textbooks will now stop calling it an 'astrolabe' and start teaching it as the first known analogue computer, complete with differential gearing. How many more shipwreck discoveries would change our history if we funded deep-sea archaeology properly?
Source: timesofindia.indiatimes.com
This story was synthesised by AI from the source linked above.
